Vista Memory Management Info

May 25, 2009 at 09:54:00
Specs: Windows Vista Ultimate 64 bit, 2.4GHz Quad-Core
I am just going to bring this up to see if I can get an interesting topic going here that I have been performing some research on, and have come through with some interesting results.

Not too long ago, I had been marveling about how much memory vista was using on startup. I have been using vista for some time, and kind of knew from different forum posts that it was a given that vista was a memory hog. When my computer was just turned on, it showed that I had already used between 1.2-1.4gb of memory. Whereas in XP, it had only used up 150MB after the computer was loaded. What was going on here? I knew that many people had complained about how much memory vista took up, but I knew that there must have been a reason for it.

I then came upon an article that explained the Super Fetch feature in Vista. This article explained the process by which vista defaults toward; the caching of programs that it thought I would use next. Personally, I thought this was a bit silly, I am a 3d artist and compositor, the main programs I use take up most of my memory when they are running. How could vista load these into the memory cache when they take up most of my memory? I realized that it most likely couldn’t.

So I went to the services tool to see if I could disable this Super Fetching feature. Upon finding the Super Fetching service status showing as Automatic in Services, I decided to disable it. I also disabled several other things that I did not need such as Tablet Input Service, DWM (Desktop Window Manager, which had been taking up 40,000 to 45,000k of memory on an average day), and several others.

After I restarted the computer, I noticed that vista was using about 850MB of memory, a small improvement from before. I also noticed that vista was not caching my available RAM anymore. But perhaps the biggest difference that I noticed was that where before my computer would take 1-2 minutes to hibernate, it now hibernated in only under 20 seconds. The same applied for startup time from being in a hibernated state. When I used to come out of hibernation, it would take nearly a minute, maybe even a little more, but now it only takes about 10 seconds! What an improvement! I assume that vista is not saving all of that cached crud to the disk anymore when it is hibernating.

Another thing that I have noticed is that vista seems somewhat more responsive.

All of the above also applies to the Windows 7 RC1.

Does anyone have any similar experiences or tips? I am considering writing an article on this, I literally searched everywhere for the information I just wrote above, but could not find it. I hope that others will benefit from this information.

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May 25, 2009 at 10:38:27
That was the link that I derived some of my info from, it seems to be a popular one.

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May 25, 2009 at 11:24:55
DWM is used for the Aero-fearure in Windows Vista. If you disable Aero, it should use a lot less RAM.

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May 25, 2009 at 11:50:05
Yes, I know that the DWM service is for the aero feature, thats why I disabled it, it does nothing but make my OS environment look more 'pretty'. And I'd take performance over looks any day.

There was an article some time back titled "Ten Ways to Make Vista Look Better", or something along those lines. One of the first replies was, "Make windows look better? Thats like trying to put lipstick on a pig".

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